JEFFERSON COUNTY, Alabama - Authorities searching for a missing Jefferson County man since Monday said they have not had any success in finding him.

The Jefferson County Sheriff's Office today identified the man as 61-year-old Glenn Paul Florence. Investigators said they are treating Florence's disappearance as a missing persons case, and have not said whether they suspect foul play.

Florence's son called the sheriff's office about 3:30 a.m. Monday to report the disappearance. When deputies went to the home on West Ridge Drive near Huffman, the son told them had last seen his father about 8:30 p.m. Sunday.

The son said his father was home when he left to go out. When the son returned home about 12:30 a.m., he couldn't find his father. The son, however, did find a note from Florence saying he had gone fishing at East Lake Park.

The son drove to East Lake Park and found his father's locked van, with his cell phone inside, but did not feel safe looking for his father by himself, said Chief Deputy Randy Christian. He called Birmingham police, and an officer walked around the park with him.

When they didn't find Florence, the son went back home and called the sheriff's office to file the missing persons report. Sheriff's divers on Monday spent several hours unsuccessfully searching the park lake.

The dive team finished searching the lake about 1:30 p.m. Christian asked anyone with information on Florence's whereabouts to call the sheriff's office at 205-325-1450.